Tubular wall assembly and gasification reactor

Abstract

Tubular wall assembly ( 8 ) comprising a plurality of tubular conduits ( 10 ) in parallel arrangement interconnected to form a gastight structure, each tubular conduit ( 10 ) being connected on one end to a common distributor ( 12 ) and on another end to a common header ( 11 ), wherein through each conduit a flow path extends between the distributor and the header, wherein each flow path crosses a passage opening in a seat ( 21, 28, 43 ) for an insertable flow restrictor ( 22, 44 ), wherein for each conduit the wall assembly comprises an opening ( 17, 51 ) bordered by a collar ( 15, 42 ) with an open end in line with the seat, wherein the open end of the collar is closed by a cap ( 26, 35, 49 ).

1 . A tubular wall assembly comprising a plurality of tubular conduits in parallel arrangement interconnected to form a gastight structure,
 each tubular conduit being connected on one end to a common distributor and on another end to a common header,   wherein through each conduit a flow path extends between the distributor and the header,   wherein each flow path crosses a passage opening in a seat for an insertable flow restrictor,   wherein for each conduit the wall assembly comprises an opening bordered by a collar with an open end in line with the seat,   wherein the open end of the collar is closed by a cap.   
     
     
         2 . A tubular wall assembly according to  claim 1 ,
 wherein at least one flow restrictor is provided with a strainer tube having one end provided with an orifice matching the seat,   wherein the strainer tube is provided with a plurality of openings having in total a larger accumulated flow-through capacity than the orifice.   
     
     
         3 . A tubular wall assembly according to  claim 2 , wherein the flow restrictor comprises a frusto-conical plug portion and the seat comprises a matching frusto-conical receptacle portion. 
     
     
         4 . A tubular wall assembly according to  claim 1  wherein a tensioned compression spring is arranged between the flow restrictor and the cap. 
     
     
         5 . A tubular wall assembly according to  claim 1 ,
 wherein the orifice is connected to the seat by a threaded connection.   
     
     
         6 . A tubular wall assembly according to  claim 1  wherein the flow restrictor is configured to maintain a pressure drop in the tubular wall assembly between the distributor and the header is between 0.15 and 0.75 MPa. 
     
     
         7 . A tubular wall assembly according to  claim 1  wherein at least part of the openings in the wall assembly are arranged in the distributor opposite the proximal end of the corresponding conduit. 
     
     
         8 . A tubular wall assembly according to  claim 1  wherein at least a part of the openings is arranged in the wall of the corresponding conduit, wherein the collar has a longitudinal axis at an acute angle with the longitudinal axis of the conduit in direction of the flow path. 
     
     
         9 . A tubular wall assembly according to  claim 2 , wherein the flow restrictor comprises a strainer tube with a tubular wall having a plurality of openings and with at least one open end with an orifice having a flow-through capacity which is less than the accumulated flow-through capacity of the openings in the tubular wall. 
     
     
         10 . A carbonaceous feedstock gasification reactor comprising a pressure vessel, at least gasifier unit confined by a tubular burner wall within the pressure vessel, wherein at least one burner is arranged to heat up the interior of the gasifier unit wherein the tubular burner wall comprises a tubular wall assembly according to  claim 1 . 
     
     
         11 . A method of assembly of the carbonaceous feedstock gasification reactor of  claim 10 , wherein the tubular wall assembly is arranged within the pressure vessel without the flow restrictors, and wherein subsequently the open ended collars are closed off, and wherein subsequently the distributor, the conduits and the header are flushed and/or boiled out, and wherein subsequently the caps are removed from the open ended collars, the flow restrictors are positioned, and the caps are put back to close off the open ended collars. 
     
     
         12 . A method according to  claim 11  wherein subsequently the caps are welded to the open ended collars. 
     
     
         13 . A method of operating a carbonaceous feedstock gasification reactor according to  claim 10 , wherein water is provided via the distributor to the conduits,
 wherein the water is heated in the tubular conduits to form steam and   wherein the steam is discharged from the tubular conduits via the header,   wherein a pressure drop in the water between the distributor and the header is maintained between 0.15 and 0.75 MPa